Battery pack



FIG. 1 is a perspective view of the battery pack;

FIG. 2 is a front view of the battery pack;

FIG. 3 is a rear view of the battery pack;

FIG. 4 is a top plan view of the battery pack;

FIG. 5 is a left side view of the battery pack;

FIG. 6 is a right side view of the battery pack;

FIG. 7 is a bottom plan view of the battery pack; and,

FIG. 8 is a rear and lower left perspective view of the battery pack.

The ornamental design for a battery pack, as shown and described.